Cutter and device for forming curved slots under lips of continental type heels



June 12, 1945. J. M. FULLER I CUTTER AND DEVICE FOR FORMING GURVED SLOTS UNDER LIPS OF CONTINENTAL TYPE HEELS Filed July 6 1944 INVENTOR. JOHN M. FULLER Patented June 12, 1945 UNITEDI STATES. PATENT OFFICE 2,377,931 I V p CUTTER, AND DEVICE FOR- FORMING cURvEDsLo'rsUNDERmPs OF'GON- TINENTAL TYPE HEELS Application July 6, 1944, Serial No. 543,672 9 Claims. (01. 12-42) This invention relates to an apparatus for'cutting a curved scgmentahshaped' slot in'thebreast under the lip of a continental type heel.

.Hsels of thistype .whichusually have a straight breast face and an extension lipthereabove are to. provide a simple and effective apparatusby' whicha segmental shaped slot may be out under thelill Qf the hcel to a sufiicient-depth without.

cutting through theside suriacesor breast edges oftthe heel.

A further object of the invention is to provide an apparatus. for cuttinga curved segmentalshaped slot under the'lip of a continental type hcel so that the extremitiesof. this slot are entirely in the breast face of the heeladjacentthe breast edge and arenot cut through to mar the side faces of the. heel.

7 An important feature of the present invention is. the. proyision of a saucer-shaped or frustoconicabshapedcutter which may beregardedas a. saucer-shaped circular saw which has the proper diameter and slope or angle, to fit the curved under surface'of a heel lip for cutting. a slot across the breast of the heel directly under the lip, the. upper wall of the resulting slot: being a. continuationof the under curved surface of the lip. The apparatus also includes a mounting for the cutter together with an adjustable slide bracket mechanism for holding the heel to be cut. andfor moving the heel in contact with the cutter at the proper angle and for-the correct distance. The slide bracket mechanism includes. an inclined slide plate on which is mounted a guided slide for carrying'the. heeltobe cut. The slide is provided with an adjustable. stop for limitin its. movement toward the cutter and also with adjustable means for positioning theiheelon the slide.

Other objects, features and advantages ofv the apparatus of the present invention will be betterunderstood from the following description .of a preferred embodiment. thereof, taken in connection with the accompanying drawing in which:

Fig. 1 is aside elevational view'of, apreferred form of th apnaratus constructed in accordance with the present invention. a

of aportion of the apparatus showing the rela-.

i 2 is. a front view of the'apparatus shown in Fig. 1, looking from the left..

Fig. 3 is a broken vertical-sectional side view tionship of the cutter. andfheelatapproximately the. completion. of the cutting operation.

Fig.14. is a view taken/on theline 4-4 of 31with thefiheelremoved from: the cutter and showing the-shape of the'cutin theheel under tli'efllip.

. Thd drawing shows a preferredform of apparatus constructed and: arranged in accordance with a, preferred form of the invention, but it will be apparent .from; the; following description that considerable variationmay be made. Referring: to the drawing. the; ap aratus comprises a. supporting bracket lllsmounted on a. bench or other suitable fixed. support l2. An electric motor 'hllis-rigidlymounted onthe right side of the vertical sectionofrtbe bracket II): with its spindle. extending. vertically, the1upiller' end of whichv carries a frustorconical-shaped'saw or cutter- 16. The saw lt'include's a heavy base mount-mgv section. asshown, and: an annular outer saw-mother section or. saw blade la. of the desired thickness. for example, approximately onesixteenthof an inch. lira particular instance, the saw. I Shad a diameter of about three inches, with the blade lll about threc-cighths orone-half inch wide ontop and wide enough within the cone to take any heel lip. Theslopcor angleof the saw blade withirespect to the axis of the'cutter p ndle was approximately the angle shown in ll' of. the, drawing.- Other types of cutting edges may bevused which are adapted to generate a surface of revolution having a conical or frustoconical-shaped cross-section to;- fitthe heel lip. The left side of the vertical section of the bracket Ill is provided with'twospaced guides. 2 1, between which :1 mounteda-vertically-adjustable plate 22 having fixed bracket members 24cut at the angle indicated. Aslidc'plate-ifi isrigidly attached to the bracket-s.Zl-andthcplate 22. atv the angle to theaxis of the cutterzindicatedain Fig. L, which is the same or substantiallythesaine as-that of the saw blade: The. vertically-adjustable plate 22 is provided, with an adjustingscrew 28 threaded in: its lower portion the-screw. 28 being mountedfor rotatmnina lug 30 fixed tothelower portion of the. bracket, Ill. The: adjusting screw 28 is provided at: its lower end with ahead below the lug 3& andwith a-nut-.32-.:ab.ove=the, lug which is keyed tothescrew 28. The-turning of the-screw 28 moves the plate 22 up or down with respect to: the cuttcnlli, as desired. Y After the height of the plate 22 is adjusted, it is rigidly secured to the side of the bracket ID by means of a bolt 34 which extends through a, slot in the plate 22. The guides 20, one on each side of the plate 22, insures its vertical movement. The stationary slide plate 26 has a central rounded beveled notch at its upper end so that it fits somewhat around without engaging the spindle of the motor [4, as shown in Fig. 1.

The heel-carrying or mounting portion of the apparatus operates on the slide plate 26 and comprises a relatively wide slide 36 having attached guides 38 which operate along the side edges of the slide plate 26. The slide plate 26 and slide 36 are centered with respect to the spindle of the motor, and the upper end of the slide 36 is provided with a round notch so that it does not come in contact with the spindle of the motor. The upper end of the slide 36 is provided with. a bridge-like breast stop 46 which is attached to the slide 36 by screws, as indicated in Fig. 2. The upper left corner of the breast stop 40 is beveled at 4| to receive the breast of a heel 42 to be cut. The central section of the lower front corner of the breast stop 40 is also beveled so that it does not come-in engagement'with the cutter l6 or its holding nut. In fact, the bridging section of the breast stop is sufficiently high to ride above the cutter, as clearly indicated in Fig. 1. The right side of the slide 36 is provided with a handle 44 which is secured to the slide and the breast stop by means of screws, as shown in Fig. 2.

The heel 42 to be cut by the apparatus is mounted on a wedge-shaped member 46 which is attached to the slide 36 by means of screws, and which is replaceable by wedges having different angles in order to present the heel to the cutter with the under side of the lip at the proper angle with respect to the under side of the cutter. Other means for adjusting the angle of the heel may be used in place of the wedges. plate with an adjusting screw could be used, or the slide plate 26 could be made adjustable with respect to the plate 22. The heel 42 is held in alignment on the wedge 46 with respect to the axis of the cutter by means of an adjustable heel gage or side stop 48 provided witha slot and an adjusting screw by which it is held firmly to the outer portion of the slide 36. The wedge 46 and the heel gage 48 may be made of wood, while the remainder of the apparatus may be made of steel or other suitable metal. The gage 48 may be made from a rectangular-shaped block with the inner end shaped, as indicated, to fit the upper side face of the particular type of heel to be grooved. The lower inner portion of the gage 48 is preferably cut away as indicated in Fig. 2, so that it extends over the wedge 46.

The slide plate 26 is provided at its lower end with a stop pin 50 for limiting the movement of the slide 36 away from the cutter and to prevent it from sliding off the slide plate 26. The movement of the slide 36 and the heel mounted thereon toward the cutter, is limited by a slide stop 52 having an end flange which contacts the lower end of theslide plate 26. The slide stop 52 is attached to the upper portion of the slide 36 by a screw and washer 54, the screw extending through a slot in the slide stop 52. By properly adjusting the slide stop 52, the slot in the heel may be accurately cut to the proper depth in the face of the heel breast directly under the lip without marring the side faces or breast edges of the heel.

The apparatus isrelatively simple to operate,

A hinged the heel being held manually in its proper position on the wedge 46 against the end of the gage 48 and the breast stop 40 by the operators thumb. The operator simply grasps the handle 44 with his right hand and extends his thumb around the heel 42, firmly holds the heel against the gage 48 and the breast stop 40 while moving the slide assembly, including the slide plate 36, forward, so as to bring the heel into cutting relation with the cutter i6. As soon as the slide stop 52 contacts the slide plate 26, the assembly is retracted, the slotted heel removed, another put in its place, and the operation repeated. The apparatus is arranged so that the slide assembly is retracted to the stop pin 50 so that the cutter clears the lip 56 of the heel 42. After the assembly is retracted the heel may be allowed to drop from the slide into a pan or other receptacle. If desired the heel may be held in place by mechanical means and the slide may be automatically reciprocated by suitable means. Also, if desired, the cutter may be reciprocated while the heel is held stationary.

The relative positions of the heel 42 and the cutter 46 at the completion of the slot or groove 58 is shown in Fig. 3 wherein the respective angles of the slide 36, the wedge 46 and the cutter, are shown. It will be noted that the slide 36 is always at a fixed angle with respect to the axis of the cutter, and substantially parallel to the slope of the cutter. The desired angle for a particular heel is obtained by the use of a wedge 46 having the proper adjustment angle. The shape of the slot 58 formed in the heel by the cutter, and the extremities of the cut in the breast face of the heel, are shown in Fig. 4 of the drawing. The upper wall of the slot 58 with the heel upright is desirably and preferably a continuation of the under surface of the lip of the heel which curves upwardly and outwardly from the under center line of the lip.

Having described the invention in its preferred form, what is claimed as new is:

1. An apparatus for cutting the slot in the breast under the lip of a continental type heel comprising a rotary cutter having a slot'cutting edge constructed and arranged to generate a surface of revolution having a frusto-conical-shaped cross-section substantially fitting the curved under surface of the heel lip, means for mounting a heel to be cut in a position adapted to present the breast of the heel directly under the lip to the edge of the cutter with the lip within said surface of revolution, said means including a reciprocable slide mounted adjacent the cutter on a slide base set substantially parallel to a line through the center of the heel, the axis of the cutter, and said conical surface.

2. An apparatus for cutting a curved slot in the breast under the lip of a continental type heel, comprising a cutter having a saw blade with a frusto-conical-shaped cross-section, means for mounting a heel to be cut with the breast of the heel facing the saw, said means including a reciprocable slide on which the heel is mounted, said slide in turn being mounted on a Slide base which is adjacent the cutter and which is set at substantially the same angle to the axis of the cutter as that of the saw blade, and adjustable means for limiting the movement of theslide toward the cutter.

3. An apparatus for cutting a slot in the breast under the lip of a continental type heel comprising a saw having a blade of frusto-conical shaped cross-section, means for mounting a heel to be cut with the breast of the heel facing the saw, said means including a reciprocable slide on which the heel is mounted, said slide in turn being mounted on a slide base which is adjacent the saw and set at substantially the same angle to the axis of the saw as that of the saw blade, and means for setting the heel at the, proper angle for cutting the slot under the lip.

4. An apparatus for cutting a slot in the breast under the lip of a continental type heel having a lip with a rounded under-surface, comprising a rotary cutter having a saw blade with a frustoconical-shaped cross-section, means for mounting a heel to be cut with the breast and lip of the heel facing the saw, means providing for the relative movement of the cutter and mounting, said mounting means including means for alligning the heel with the axis of the cutter.

5. In an apparatus for cutting a narrow curved slot in the breast under the lip of a continental type heel having a lip with a rounded under surface, a rotary cutter having narrow cutting elements constructed and arranged to generate a surface of revolution having a frusto-conicalshaped cross-section.

6. In an apparatus for cutting a narrow slot having curved walls in the breast directly under the lip of a continental type heel having a lip with a rounded under surface, a rotary cutter including an annular saw blade having a frustoconical-shaped cross-section.

7. In a machine for cutting a narrow curved slot in the breast directly under the lip of a continental type heel, a rotary cutter having a narrow cutting edge'constructed and arranged to generate a surface of revolution havinga frustoconical-shaped cross-section, means for mounting a heel to be cut in a position for presenting the breast face of the heel under the lip to the edge of the cutter .with the lip extending within the surface of revolution, means providing for the relative movement of the cutter and the mounting, and means for controlling the depth of the slot cut in the breast of the heel.

8. In a machine for cutting a narrow curved slot in the breast of a continental type heel directly under the curved under surface of the lip of the heel, a rotary cutter having narrow end cutting elements constructed and arranged to generate a narrow path of revolution having a frusto-conical-shaped cross-section, heel mounting means for supporting a heel to be cut in a position for presenting the breast face of the heel under the lip to the edge of the cutter with the lip extending within and adjacent to the surface of revolution, slide means providing for the relative movement of the cutter and the mounting, and means for limiting the extremities of the slot to the breast face of the heel.

9. In an apparatus for cutting a narrow curved slot in the breast of a continental type heel directly under the curved surface of the lip of the heel, a rotary cutter having narrow end cutting elements, said cutter being constructed and arranged to generate a narrow path of revolution having a frusto-conical-shaped cross-section, a vertically adjustable slide plate mounted adjacent said cutter at an acute angle to the axis of the cutter which is approximately equal to the angle of said cutting elements, a slide on said slide plate guided for reciprocable movement toward and away from the said cutter, said slide including means for mounting a heel to be slotted, said means including an adjustable member for lining the center line of said heel with the axis of said cutter, a breast stop against which the breast of the heel is held during the cutting operation, and a wedge on said slide on which the heel is mounted for adjusting the angle of the heel lip with respect to the angle of the cutting elements.

JOHN M. FULLER. 

